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(No Model.)4 2 Sheets-#Sheet 1.

G. E. JOHNSON.

GASOMBTBR.

Patented Mar. 2, 1886.

IN'VENTOR: 4

ATTORNEYS.

(No Model.) 2 sheetssheet 2.

G. E. JOHNSON,

GASOMETER.

No. 337,065. y Patented Mar. 2, 1886.

W .KSB N W1TNEssEs= iq INVENTOR:

.QQ I' BY MCL/w14, JKM w TTORNBYS;

mi" .AVAILABLE cow llniieo inline ATENT cnice,

GASOMSTFR,

ePeoImoA'rxoN Vforming part of Letiegemteut No. 337,065, aies Maren 2, ieee;

Application filed June 26, 188,5. Seriell No. 169,514. (No model.)

To alt whom it 'may concern:

Be it known that I, GEORGE E. Jonson, of Albion, iu the county of Noble and State of indiana, have iuveotedetnew and Improved Gasometer, clear, and exectdescripton:

The object of my invention/is to providea new and improved gasometer or dental narcotizer for nitrous oxide used by dentists and others to produce atx'ioesthesie.v

The invention consists-in the construction and combination of parts and details, as will be fully eet forth hereinafter.

Reference is to be had to the accompanying orowings, formingpart of this specilication, 1n which similar letters oi' reference indicate corresponding partsin all the igures.

improved gasonieter or dental narcotizer. Fig. 2 is o detail sectional view of the lower port oi' the seme, showing the device for holding the bcii raised., Fig. 3 is a side view of the bell. Fig. 4 is n detail perspective view of the tripo. for holding the liquidcylinder.4

The wel! A. for receiving the water is formed between the cylindrical casing B and the cylindrical casing C, united at the bottom and secured on e, lense, C. The casing B is open at the top, and the casing C is provided with a. double conical top, D' D', the vertex of which is above the outer woll or casing, B, ofthe well A, so ,os to .avoid any possibility of the water entering and obstructing the pipe N. Between the parte D D' of the conical top the rubber pockiugotrip E is held :it tho outer edges, which strip rests against the inner side ofc bell, F, dipping into the wzttcr between the cosings B and U. Elie casing B is surrounded by o. cylindrical shell, G, open it ille top,nnd between the casing B :md the shell G the covering section or bell l-I posses, which covers and hides the bell F. A cord or elm-io, l, securel to the top of' the bell F, posses over. a pulley, l', on the inside of the top o" the coveringbcll H, which liosvaionblc hinged lid, lim/ing hingen at mf cud m, The cord or chain i is peeso throughe-slot, l, in the bell H, over a pulley, l, ou the outside of' the bell il, anzi, to the lower end of said chai-n or cord o, weight, J, is secured to balance the bell F, which weight is adopted to slide up and of which'th'e ollowing is a full,

down in the box Lonthe'outside'of the Snell G. The bell H has a vertical slot, K, otto@ edges of whiolr racks K ero provided.V f An erin, L, secure on the-bell F, -posees thoiig'll 5i the slot K. and to, itsend thecoltelli! is pio* oted, w hach can be engaged with the teeth'oi the rocks lil. .The arm bis provideipwith two opposite pointers, L", whiclipointtotwo sceles,L,nt the sides of the recite, Witiclis'oeli'ee that the pointer shows ou one'scz'tlclhowvmuch gasis in the bell, and vron the other scale liowinuch gas'has been removed. Lugsfll'or other projections are. provided on the insidel iff/the bellH, and slide in vertical'goideslloirthe outer surface of the easing l5, os shown yin Fig. 2, servingvto support the bell H when the some the two 'guides is closed' to prevent'th'e log lll from passing out ofthe scid slot occiflcntolly, and e, lateral opening leads from eaififcloeeii end to a bracket forming e' sont, the 'bottom wall of which is below the lower ,edge of the said lateral opening. A slot ie formed bef, tween the opper end ci the bracketr :uidI the closed top of the guides. By this construe tion the lug M may slide in the guides, anni when it is desired toiliold the bell 'Hlreis'eil the lng is passed through the ioterztl opening at tbeupper end of the guides into tlio sont, l By raising' the bell H vertically when the log M ie in thc seat 'the said lieli'ximy be removed from the casingB. vThe inlet and outlet pipe N is secured at its' upperinuer endiii the iniddle of the top D D'lof thecasing, extends downward, then cctv/articoli upward .on the outside of the shell G, and is provided with' the cock N at iisnppcr outer end. I A cock; O, is provided tlieiowcr cull oi' the vertlcal outei` part ci tlie 'pipe N. The casing B is provided at the bottom withtwo'cooks, P P', for drawing oii thotvvatei' from theiwell and from. the space between the outside' can ing and tho shell,'shooid any waterow over the top of the casing B on account of too great pressure of goe wliiio filling the bell E, eeen oook P being prot'ieimitionoprv, Q, ori-the upper end of wxich the gage-gloss Q is held foi' showing' the levelof tlie'vmter' in the well betweenmlie rceeingo E el roti or milf R, ie secured in e dretwoonf etonne?.

5o have numerals arranged in opposite orders, se

giulio, f

' '.hlder is inserted in the vzo l 'provided with ,a ,mouth-piece is the shell G at one or both sides, and over the vfname; hooks R are passed, which are secured on the' side ofgthe case S, containing a tripodfranie, W, for holding inder T, ,whichis connected by a hose or tube, U, with the cock O of the pipe N. 'The case S has a cover, S', providedwithanaperture, S', through which the neck of the nitrous-oxidecylinder T can pass.v Vhen the tripodframe `is removed from the case S, .a larger nitrous-oxide cylinder can be passed into the case. Thistripodframe,which formsa holder for. the nitrous-oxide cylinder, is formed of 4wires bentinward and connected attheir lower 5 ends, and bentoutward and formed with hooks at their upperends. A band secures the wires together near their upper ends. XVhen the ease S, the hooked ends engage the upper-'edge of the case and support the holder therein. i The yoperation is as follows: The cylinder T is placed in the case S, and thetube U z :ennected with the cock O, and the cock N is closed. The valve of the cylinder T, containing the liquefied gas, is opened and the gas passes'through the tube and the pipe N into the bell F, which is raised and locked in placel by the catch Lengagi-ng with teeth of the 'racks K', fAs the bell F ascends,

J descends. .Whenthe cimmed quantity of the Weight is in the',2bel1"F,the cylinder T is closed and the vtubevU'ma'y be uncoupled from the oookO. To administer the gas, ailexible tube coupled on 5V theend of `the pipe N, and the latch L is raised,

4b H, hich is provided for the purpose of coveringthe bell F when'the same is raised.

The spaceb'ctwcen the casing B-and the shell G se'ives as an o'verow,fto catch the walter that is forced out of the well, thus preventing the water from flowing on the floor.l

The advantages of my improved gasometer are'as follows: The gas-chamber is dry, and th the water forming the seal cannot absorb mnch gas. The gasometer is small in relation to its capacity, andl as very littlewater is re-` 'qired the apparatus and water in the same weigh verylittlc.'

Thecylindenease can of the-apparatus.

' I claim' as new, and desire to secure by Letters Intent, iss- 1,."-The combination, with the cas-ings E C, `of the bell F, a top on the easing U, anda 69 packing-strip held on the bottom edge of the.

top and resting against the inside el' the bell, substantially'as herein shown and described.

the nitrous-oxide eyland passed over pulleys on on the end of the cord, substantially l at the upper-.end to permit'` the beiLF to descend to exert the at the sides of the racks, be hung on eithcrside l 'the end ci the arin L, Having thus described my ',wention, what.

2. The combination, with the casings B C and the shell G, of theubell F between the casings B C, the bell H between tliecasing Band the shell G, .the cord I, secured to the bell E the bell II, andthe weight J as herein shown and described.

3. Thecombination, wththecasingsBC,of an imperforate cover on the casing C, thebell F, and the pipe N, having its inneropen end held in the middle of the said cover, tially as herein shown and described. 4. In a gasometer, the combination, with the shellG, of the rail It, around said shell, and the gas cylinder case S, having hooks R' hung on the said rail, substantially as herein vshown and described.

5. In a gasometer, the gascylinder case S, in combination with the holder within said case, having a supporting-hook at its upper end engaging the upper edge of 4the said ease, substantially as set forth.V

6. In a gasonieter, the nitrous-oxide holder W, formed of a wire tripod having the upper ends of the wires formed with hooks, substuu tially as set forth.

7. vIn a asomctcr, the combination, with the casing having vertical guides M', and

a lateral seat at the upper ends of said guides, of the bell H, provided with a lng, M, adapted to slide within thelguides and to engage said seat, substantially as set forth.

8. in a gasolnctcr, the combinatioin with the casing B, having vertical guides M", closed and provided with a lateral opening in one side, and a bracket open at its top and formingaseatcommunicating with the lateral opening in Ithe guides, of the bell H, having a lug, M, within the guides, substantiallyas set forth.

i). In a gasonieter,` the'corubination, with the casings B C, of Ithe shell G, the bells F ll, the racks K, the arm L, and the catch L', substantially as herein shown" and described.v

10. The combination, with the casngs B and C and the shellfG, of the bells F Il and the outlet-cocks P shown and described.-

11. The combination, with the bell F, of the bell Il, surroundingit,and provided with the slot K, the racks at the sides of the-slot, scales the arm L, the latch L on the end of the arm L, and pointers on .illlsllantl'nll'y as herein shown and described.

GEORGE '12. JOHNSON.

Witnesses:

E,IR. GasAMAN, Grammes M; Cmrr.

substan- ICO llO

IIS 

